Knitting machine of a cylinder type



Jan. 30, 1945. c. KOPPEL 2,368,224

KNITTING MACHINE OF A CYLINDER TYPE Original Filed Feb. 17, 1942 T g F w/Q ill I', I I \\\@0 1 I a0 5? 5/ f a I 52 nflnnnnnnnnn II a? 37 Q Q v Z6 54 4 55-56 Z4- I z;

awe/M5 072a? Zes 52777632 Patented Jan. 30, 1945 KNITTING MACHINE OF A CYLINDER TYPE Charles Koppel, Robbinsville, N. J.

Original application February 1'7, 1942, Serial No. 431,307. Divided and this application May 13, 1943, Serial No. 486.867

Claims.

This application is a division of application Serial No. 431,307, filed February 17, 1942.

This invention relates to improvements in knitting machines of a cylinder type and it is an object of the invention to provide the cylinder with means for preventing accumulation of dust and dirt in the grooves provided in the cylinder for the needles, jacks and the like.

It is also an object of the invention to provide the cylinder of the knitting machine with openings leading from the bottoms of the grooves of the cylinder for the needles, jacks and the like, each of said openings having an inwardly and downwardly inclined bottom wall for facilitating the movementof dirt by gravity through the opening to the interior of the cylinder and, furthermore, to provide a receptacle arranged to receive dirt passing through the said openings.

The invention consists in the details of construction and in the combination and arrangement of the several parts whereby certain important advantages are attained, as will be hereinafter more fully set forth.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawing, wherein Figure 1 is a sectionalview illustrating an embodiment of the invention.

Figure 2 is a section on the line 2--2 of Figure 1 and;

Figure 3 is a section on the line 3-3 of Figure 1.

A cylinder and dial type of circular knitting machine has a needle carrying mechanism such as is illustrated in Figure 1 wherein the cylinder for carrying the vertical needles is indicated by the numeral 2 while the dial is more or less conventionally illustrated and indicated generally by the numeral 25. As is well known the cylinder has formed in the outer wall surface a plurality of vertical. needle grooves 26 in which are slidably mounted the vertical needles 21 while the dial 25 is provided with a plurality of radial needle grooves 28 in each of which slides a horizontal or radial needle 29. In carrying out the present invention in connection with a cylinder machine of this character the dial has formed therethrough the vertical slots 30 each of which opens through the bottom of a radial groove or channel 28. The needles 29 in their back and forth movement run over these slots and any dust or dirt which may collect in the slot will be forced out through the same to drop down through the cylinder.

In the cylinder portion there are provided a series of radial openings or slots 3| each of which opens through the bottom of a channel or groove 26 and the lower wall of each of these slots is arranged at a downward and inward inclination as indicated at 32 so that material such as dust or the like which is removed from the slot by the needle or which is scraped from the needle, will gravitate through the slot to the interior of the cylinder.

Around the interior of the cylinder there is arranged an annular receptacle 33 which comprises an annular wall portion 34 connecting at its lower edge with an outwardly extending bottom 35 which has a flange 36. This flange is secured by screws 31, or in any other suitable manner, to the wall of the cylinder as shown, so that it may be readily removed when desired. The wall 34 cooperates with the inner wall of the cylinder to form the completed receptacle as shown and into this passes any dust or dirt which escapes through the passages 3|.

'In the construction shown in Figure 1 the dust escape openings have been formed by cutting individual slots through the cylinder wall and the dial plate but it will be apparent that these slots may also be formed by cutting channels in the inner walls of these two units to a depth sulficient to open into the grooves 26 and 28 or to a greater depth whereby the portions of metal lying between the grooves will be recessed.

It is also within the scope of the present invention to apply the same to those cylinder machines in which there are employed two cylinders arranged in end opposed relation but axially spaced to provide an intervening space across which the needles extend. In such construction the grooves or channels would be preferably formed, as illustrated in Figure 1. each cylinder being provided with a dust or dirt collection or receiving receptacle similar to the receptacle 33 or the dirt escape openings might be formed by cutting a circumferential channel in the inner wall of each cylinder in the manner above described.

The top of the cylinder can have openings for g the channels used with the well known sinkers,

said openings discharging outwardly of the cylinder or into a container within the cylinder such as 35.

What is claimed is:

1. In a cylinder type knitting machine havin a cylinder provided with needle grooves longitudinally of a wall surface, means for preventing accumulation of dust and dirt in said grooves comprising openings leading from the bottom of each groove in a radial direction through the cylinder wall, each of said openings having a downwardly inclined bottom wall for facilitating the movement of dirt by gravity through the opening, the said inclined bottom wall merging with the bottom surface of the adjacent groove to form a scraping edge in the plane of the bottom surface of the groove to have scraping engagement across the back face of a needle in the groove.

2. In a cylinder type knitting machine havinga cylinder provided with needle grooves longitudinally of its outer wall surface, means for preventing accumulation of dust. and dirt. in saidgrooves comprising an opening leading from the bottom of each groove in a radial direction to the interior of the cylinder, each, of said openings having a downwardly inclined bottom wall for facilitating the movement of dirt by gravity through the opening to the interior of the cylinder, and an annular receptacle mounted upon the interior wall of the cylinderand arranged. to receive dirt passing through said openings.

3. In a cylinder. typeknitting. machine having a cylinder provided with. needle grooves. longitudinally of a wall surface, means for preventing accumulation of dust and dirt in; said grooves comprising an opening leading from. the bottom.

ings having a downwardly inclined bottom for facilitating the movement of dirt by gravity through the opening, and an annular receptacle upon the cylinder in a position to receive dirt passing through the openings.

4. A cylinder type knitting machine having needle grooves, each of said grooves having an opening formed through the bottom thereof for the escape.- of. foreign matter such as dust and dirt from the grooves, each opening being formed to have a side intersecting the bottom of the adjacent groove and forming therewith a scraping, edge extending across the groove to engage the back face of a needle in the groove and scrape adhering matter therefrom for discharge through edge, extending across th groove to engage the back face ofa needle, and. a receptacle supported relative, tov the escapeopenings of the grooves to receive matter passing. therethrough from the grooves.

CHARLES KOPPELL 

